Dynamic Pricing under a Static Calendar.
2018
This work is motivated by our collaboration with a large Consumer Packaged Goods (CPG) company. We have found that while they appreciate the advantages of
dynamic pricing, they deem it operationally much easier to plan out a static price calendar in advance. In this paper, we investigate the efficacy of static control policies for dynamic
revenue managementproblems. In these problems, a firm has limited inventory to sell over a finite time horizon where demand is known but stochastic. We consider both pricing and
assortmentcontrols, and derive simple static policies in the form of a price calendar or a planned sequence of
assortments, respectively. We show that our policies are within 1-1/e (approximately 0.63) of the optimum under stationary (IID) demand, and 1/2 of optimum under non-stationary demand, with both guarantees approaching 1 if the starting inventory is large. A main contribution of this work is developing a system of tools for establishing best-possible performance guarantees relative to
linear programming relaxations: in the
stationary setting, structural properties about static policies which provide a complete characterization of tight bounds; and in the non-
stationary setting, an adaptation of the prophet inequalities from
optimal stoppingtheory to pricing and
assortmentproblems. Finally, we demonstrate on data from the CPG company that our simple price calendars are effective.
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